Ray tracing with uLisp on the Adafruit CLUE board #Raytracing #uLisp #CLUE #ItsyBitsy #Lisp #Graphics

The uLisp (Lisp for microcontrollers) website has updated their article on graphical ray tracing with uLisp to include the new, powerful Adafruit Clue board featuring the new nRF52840 processor.

This is a simple ray tracer written in uLisp, running on a colour TFT display. The scene contains five spheres and a plane.

The Adafruit CLUE is an ideal platform for this application. It’s a fast platform for running uLisp, and incorporates a 1.3″ 240×240 colour TFT display (above).

Here’s the full version of the program for the Adafruit CLUE in a single file: Ray tracing program CLUE.

uLisp contains instructions to work with the hardware in the Lisp environment.

You can also see how the code works well on other Adafruit boards like the ItsyBitsy M4 below.

On an Adafruit ItsyBitsy M4 it occupies about 1460 Lisp objects and takes about 230 seconds. It should also run nicely on an Arduino Due or ESP32.

For details of the wiring to the TFT display, and the display interface, see Plotting to a colour TFT display. Alternatively you could modify the program to plot to a different display.

Here’s the full version of the program for a 160×128 colour TFT display in a single file: Ray tracing program.

See the article here and more information about the new CLUE board here.

Adafruit publishes a wide range of writing and video content, including interviews and reporting on the maker market and the wider technology world. Our standards page is intended as a guide to best practices that Adafruit uses, as well as an outline of the ethical standards Adafruit aspires to. While Adafruit is not an independent journalistic institution, Adafruit strives to be a fair, informative, and positive voice within the community – check it out here: adafruit.com/editorialstandards

Join Adafruit on Mastodon

Adafruit is on Mastodon, join in! adafruit.com/mastodon

Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Join over 36,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

CircuitPython – The easiest way to program microcontrollers – CircuitPython.org

Maker Business — “Packaging” chips in the US

Wearables — Enclosures help fight body humidity in costumes

Electronics — Transformers: More than meets the eye!

Python for Microcontrollers — Python on Microcontrollers Newsletter: Silicon Labs introduces CircuitPython support, and more! #CircuitPython #Python #micropython @ThePSF @Raspberry_Pi

Adafruit IoT Monthly — Guardian Robot, Weather-wise Umbrella Stand, and more!

Microsoft MakeCode — MakeCode Thank You!

EYE on NPI — Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey

New Products – Adafruit Industries – Makers, hackers, artists, designers and engineers! — #NewProds 7/19/23 Feat. Adafruit Matrix Portal S3 CircuitPython Powered Internet Display!

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !

No Comments

No comments yet.

Sorry, the comment form is closed at this time.